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Time evolution of thermal instabilities

 

作者: D. Dobrott,   R. L. Miller,   John M. Rawls,  

 

期刊: Physics of Fluids(00319171)  (AIP Available online 1977)
卷期: Volume 20, issue 10  

页码: 1744-1748

 

ISSN:0031-9171

 

年代: 1977

 

DOI:10.1063/1.861775

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The steady‐state temperature profiles in a magnetically confined cylindrical plasma obtained by balancing Ohmic power input and thermal diffusion are shown to exhibit a bifurcation as a function of the applied electric field. A linear stability analysis predicts that the upper (high temperature) branch is unstable and that the lower branch is stable. These results agree with those of a transport code that uses the steady‐state profiles as initial conditions. The transport calculation reveals that the upper solution decays to the lower solution with a growth rate that is in agreement with the linear stability computation.

 

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